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Guanine Quartet Networks Stabilized by Cooperative Hydrogen Bonds

Authors

  • Roberto Otero Dr.,

    1. Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, 8000 Aarhus C, Denmark, Fax: (+45) 8612-0740
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    • These authors contributed equally to this work.

  • Maya Schöck Dr.,

    1. Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, 8000 Aarhus C, Denmark, Fax: (+45) 8612-0740
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    • These authors contributed equally to this work.

  • Luis M. Molina Dr.,

    1. Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, 8000 Aarhus C, Denmark, Fax: (+45) 8612-0740
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  • Erik Lægsgaard Prof.,

    1. Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, 8000 Aarhus C, Denmark, Fax: (+45) 8612-0740
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  • Ivan Stensgaard Prof.,

    1. Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, 8000 Aarhus C, Denmark, Fax: (+45) 8612-0740
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  • Bjørk Hammer Prof.,

    1. Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, 8000 Aarhus C, Denmark, Fax: (+45) 8612-0740
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  • Flemming Besenbacher Prof. Dr.

    1. Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, 8000 Aarhus C, Denmark, Fax: (+45) 8612-0740
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  • We acknowledge financial support from the Danish National Research Foundation through the Center for Atomic-Scale Materials Physics (CAMP), the VELUX foundation, the EU network 'Atomic and Molecular Manipulations (AMMIST)', the Danish Ministry for Science, Technology and Innovation through the iNANO Center, and the Danish Research Councils. Computational resources were supplied by the Danish Center for Scientific Computing. R.O. and M.S. acknowledge the financial support from the EU through a Marie Curie Individual Fellowship. We thank J. Kjems and L. Kantorovitch for fruitful discussions.

Abstract

original image

Gemeinsam sind wir stark: Guaninmoleküle bilden bei der Abscheidung im Ultrahochvakuum auf Au(111)-Oberflächen spontan ein H-Brücken-gebundenes Netzwerk aus G-Quartetten, wie STM-Aufnahmen belegen (siehe Bild). Die Unverwüstlichkeit des Netzwerks (bis 400 K stabil) wird mit einer kooperativen Zunahme der Stärke der H-Brücken zwischen Guaninmolekülen in einem Quartett erklärt.

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